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aalyn [17]
3 years ago
10

A chemical reaction takes place inside a flask submerged in a water bath. The water bath contains of water at . During the react

ion of heat flows out of the bath and into the flask. Calculate the new temperature of the water bath. You can assume the specific heat capacity of water under these conditions is 4.18J.g.K. Be sure your answer has the correct number of significant digits.
Chemistry
1 answer:
Archy [21]3 years ago
5 0

Answer:

 35.9°C

Explanation:

Given parameters:

Mass of water in bath = 8.1kg

Initial temperature of water = 33.9°C

Quantity of heat flow = 69kJ

Specific heat capacity of water  = 4.18J*g*K

Unknown:

New temperature of water bath =?

Solution:

The quantity of heat in a body is given using the expression below;

             H  = m c ΔT

H is the amount of heat

m is the mass

c is the specific heat capacity

ΔT is the change in temperature

  ΔT  = T₂  - T₁

We are to solve for T₂;

4.18J.g.K is the specific heat and it is the same as 4180J/kgK

 now solve for ΔT

                   69000 = 8.1  x 4180 x ΔT

                   ΔT = 2.04

T₂   = 2.04 + 33.9  = 35.9°C

     

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<span>C6H12O6

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Sulfur hexafluoride, SF6, is a colorless, odorless, very unreactive gas. Calculate the pressure (in atm) exerted by 2.02 moles o
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Answer:

9.15 atm

Explanation:

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Plug in all the number, and we will get:

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8 0
2 years ago
How many moles of tin atoms are in a pure tin cup with a mass of 37.6 g ?
Georgia [21]
Tin is an element called Stannum and has the symbol Sn. Molar mass is the mass of 1 mol of a compound, 1 mol of any substance is made of 6.022 x 10²³ units, these units could be atoms making up an element or molecules making up a compound. 
While the number of atoms making up 1 mol is the same for any element, the weight of 1 mol of substance varies from one another.
In tin(Sn) molar mass - 118.71 g/mol
In 118.71 g - there's 1 mol of tin
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3 0
3 years ago
what is the oxidation state of each element in coh2? c o h what is the oxidation state of each element in febr3? fe br
fgiga [73]

The oxidation state of the elements  in the compounds are:

CoH₂:

  • Co = +2
  • H = -1

FeBr₃:

  • Fe = +3
  • Br = -1

<h3>What is the oxidation states of the elements in the given compounds?</h3>

The oxidation states of the elements in each of the given compounds is determined as follows:

Cobalt dihydride, CoH₂

Co = +2

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Iron (iii) bromide, FeBr₃

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In conclusion, the oxidation state of the elements are charges they have in the compound.

Learn more about oxidation state at: brainly.com/question/27239694

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8 0
1 year ago
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raketka [301]

Answer:

Carbon dioxide  

Explanation:

Neither helium nor carbon dioxide has a molecular dipole, so their strongest van der Waals attractive forces are London forces.

Helium is a small spherical atom with only a two electrons, so its atoms have quite weak attractions to each other.

CO₂ is a large linear molecule. It has more electrons than helium, so the attractive forces are greater. Furthermore, the molecules can align themselves compactly side-by-side and maximize the attractions (see below).

For example. CO₂ becomes a solid at -78 °C, but helium must be cooled to -272 °C to make it freeze (that's just 1 °C above absolute zero).

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